<template>
  <!-- 主体部分 -->
  <section class="main">
    <!-- 全选反选按钮 -->
    <input id="toggle-all" class="toggle-all" type="checkbox" v-model='isAll' />
    <label for="toggle-all">Mark all as complete</label>
    <ul class="todo-list">
      <!-- 当任务已完成，可以给 li 加上 completed 类，会让元素加上删除线 -->
      <li
        v-for="item in list"
        :key="item.id"
        :class="{ completed: item.isDone }"
      >
        <div class="view">
          <input
            class="toggle"
            type="checkbox"
           :checked='item.isDone'
           @change='handleChange($event,item.id)'
          />
          <label>{{ item.name }}</label>
          <button class="destroy" @click="del(item.id)"></button>
        </div>
      </li>
    </ul>
  </section>
</template>

<script>
export default {
  props: {
    list: {
      type: Array,
      required: true,
    },
  },
  methods: {
    del(id) {
      this.$emit("del", id);
    },
   handleChange(e,id) {
    this.$emit('changeState',e.target.checked,id);
   }
  },
  computed:{
    isAll:{
      get() {
        return this.list.every(item=>item.isDone===true)
      },
      set(value) {
        this.$emit('changeAll',value)
      }
    }
  }
};
</script>

<style></style>
